Along with Lucy Siegle, I'm keen to tackle your eco and ethical dilemmas, so please do email your questions in , or post them below. Next week I'll be tackling the craze at this year's weddings and festivals, which seems to be the "sky lantern". They look beautiful, but when they fall to the ground once the candle had burned out, what impact do they have on the environment?

I'll be investigating - and I'd like to hear your thoughts too. Whether you're tired of the lanterns landing in your field or garden, have any data on the number of being released each year or you're a manufacturer trying to make them greener, add your comments below or email them in. The best will be featured in next week's column.